Platform Evolution
Assessment run-2026-07-27-1 · 213 of 213 repos assessed
Repos / phenix-cruise

phenix-cruise

Phenix Cruise vertical: a .NET Framework 4.8.1 MVC booking UI for cruise quotes plus modern .NET 10 gateway/content/Odysseus-ACL APIs backed by MongoDB cruise content.

62 · ambermediumkernelAWS + on-premZDD: needs workweb-ui

Health score

62

0 to 100 across seven weighted factors; nothing is hidden. Green is 75 and above, amber 50 to 74, red below 50. How scoring works.


Runtime currency / 25
0
.NET Framework, out of mainstream support
Legacy transport / 15
6
Calls at least one legacy WCF endpoint
Test posture / 15
15
Good test coverage
Security hygiene / 15
15
No credentials found in source
Dangerous coupling / 15
11
depends on pinning component(s): application-framework, phenix-feature-service, mail-service, mailtemplate-service
Activity / 10
10
Actively maintained
Deployment hygiene / 5
5
CI in place
Health over time
2026-07-24 (run-2026-07-24-1): 622026-07-27 (run-2026-07-27-1): 62
No change since 2026-07-24 (62 to 62).

Facts

Languagescsharp, javascript
FrameworksASP.NET MVC 5, ASP.NET Core 10, Carter, FluentValidation
Runtimes.NET Framework 4.8.1, .NET 10
Tests / CIgood / CI in place
Last commit2026-07-24
OwnerOwner unknown (mapping to be curated)
DomainSelling and quoting (system generated; curate in repo-owners.json to override)
Product areaPhenix
HostedAWS + on-prem Ships artefacts to both AWS and on-prem machines (see evidence below)
  • Release "\commercial\cruise\cruise-gateway-api": QA: deployment-group phase (agents on our own machines)
  • Release "\commercial\cruise\cruise-gateway-api": Staging: deployment-group phase (agents on our own machines)
  • Release "\commercial\cruise\cruise-gateway-api": Production: deployment-group phase (agents on our own machines)
  • Release "\commercial\cruise\cruise-gateway-api": Training: deployment-group phase (agents on our own machines)
  • Release "\commercial\cruise\cruise-gateway-api": DR: deployment-group phase (agents on our own machines)
Releases2 release pipeline(s): \commercial\cruise\cruise-gateway-api; \commercial\cruise\phenix-cruise-ui
Integrationrest, wcf, redis, jwt
SourceOpen in Azure DevOps

Risk flags

Each flag links to its glossary definition.

Dependencies in context

Laying out the graph…
greenamberreddata store (square, dashed link)Node size follows fan-in. Click any node to open it.

Entanglement

kernel Bound into the core by 2 mechanism(s).

Detaches when its pinning dependencies are cut or multi-targeted (application-framework, phenix-feature-service, mail-service, mailtemplate-service); and when its WCF surface gains a modern interface or its WCF calls move to one.

Migration playbooks

Generated from this repo's assessment data: what is feasible, what blocks it, and the steps in order. Ratings: green means actionable now, amber means sequence other work first, red means blocked, grey means not applicable.

ZDD adoption

Needs work

Feasible through the Workflow Engine's rolling drain, but real preparation is needed: dual-version discipline, better tests, or schema care before at-will release is sensible. Legacy web front end: session state and framework age make mixed-version fleets risky until state is externalised. Session already externalised to Redis (remote-session), which removes the biggest blocker.

Dependencies and gotchas
  • Consumes WCF contract packages: never take a breaking client bump mid-feature, and treat obsolete warnings as migration debt
  • Serialized state or messages in flight (Redis or queues): new code must deserialize objects written by the previous version
  • Feature flags come from phenix-feature-service (WCF-only): flag reads themselves are a legacy dependency to watch
  • Session is externalised to Redis: keep it that way, and check session object compatibility between versions
Steps
  1. Adopt the four-stage discipline from the ZDD engineering standard: pre-deployment compatibility, deployment, feature activation behind a flag, post-release cleanup.
  2. Make every change dual-version safe: backwards-compatible APIs (new major version for breaking wire changes), expand and contract for any schema change, and consumers tolerant of unknown fields.
  3. Audit serialized data: anything in Redis, queues or shared caches must deserialize cleanly across adjacent versions.
  4. Externalise any remaining session state so users can move between nodes mid-session without disruption.
  5. Wrap behaviour changes in feature flags so code deploys dark and release becomes a business decision, not a deployment event.
  6. Route deployments through the Workflow Engine's automated drain, deploy, health-check, return cycle (the path proven by the first automated production run in mid-2026).
  7. Verify with area-scoped regression rather than the whole-platform cycle, and watch error rates after rollout with automated rollback on alert.

SQL Server exit

Not applicable

No SQL Server dependency is recorded for this repo. Nothing to migrate.

Containerisation

Feasible after replatforming

Appropriate, but the .NET Framework runtime has to go first; container work rides along with the replatform rather than preceding it.

Blockers
  • .NET Framework only runs on Windows; practical (Linux) containers need modern .NET
Steps
  1. Replatform to modern .NET first (see the recommended actions). Containerising then becomes routine.
  2. Add a Dockerfile and make the app read all configuration from environment variables and the secrets manager, never from machine-local files.
  3. Log to stdout and expose a health check endpoint so ECS can supervise it.
  4. Adopt the shared ci.yml pipeline template with the container parameters (awsRegion, containerAfterBuild, ecsTerraformRepo), which is exactly how the estate's existing AWS services deploy.
  5. Define the service in the Terraform repo, deploy to a non-production environment, then shift traffic and disarm the deployment-group release pipeline.

Recommended actions

Replatform phenix-cruise to modern .NET

Runs on .NET Framework 4.8.1, .NET 10, out of mainstream support. Blocked until stage 2 cuts: application-framework, phenix-feature-service, mail-service, mailtemplate-service.

Impact: Reduces the end-of-life runtime count

proposed

Assessment notes

phenix-cruise

Purpose

The cruise vertical in one repo. Cruise.UI is the IIS-hosted MVC app (TC.Phenix.Cruise.UI.Web) for building cruise quotes inside Phenix (booking workflow, company configuration, mappers to the quote entity). Cruise.API is a modern rebuild: a Gateway API (/API/CruiseGateway), a CruiseContent API over Widgety cruise/ship/port content in MongoDB, and an anti-corruption-layer API for the Odysseus cruise platform.

Tech stack

Two generations side by side: the UI targets .NET Framework 4.8.1 (SDK-style csproj) with ASP.NET MVC, Autofac-era TC caching (Redis, multi-level, many TC.Cache.Specialised.* packages) and Redis session state; the APIs target .NET 10 with Carter minimal-API modules, FluentValidation, JWT bearer auth, MongoDB.Driver, AWS Systems Manager configuration, xUnit v3, Testcontainers/Mongo2Go/WireMock for tests, and a Dockerfile for the Odysseus ACL API.

Deployment

prod_application with 2 releases: build pipelines phenix-cruise-gateway-api and phenix-cruise-ui, release pipelines under \commercial\cruise\. Five YAML pipeline definitions in-repo (gateway, content, odysseus-acl, ui, client package) using shared azure-pipelines-templates; the content and ACL APIs do not yet appear in the traced release pipelines.

Dependencies

Very wide fan-out from the UI: cruise service WCF contract (phenix-cruise-service), quote (phenix-quote), feature service, company info, user accounts, exchange rates, teams, destination management, flights, mail and mail templates, direct stock, booking download, contact-centre service client, tax service and BackOffice integration packages, all over TC.ConnectionBroker. The APIs are much leaner (FluentResults, ConnectionBroker Mongo/Redis/Wcf, UserAccount client). External: Widgety cruise content feeds, the Odysseus cruise booking platform, New Relic, AWS Systems Manager.

Data stores

MongoDB CruiseContent database (Widgety-derived collections for cruises, ships, ports, operators, classifications) owned by the content API. Redis for the shared Phenix cache (CacheStorage=redis-dual) and remote session state in the UI.

Integration points

REST between UI, gateway and content/ACL APIs (JWT-secured); legacy WCF from the UI to the cruise service and other Phenix services; Redis for cache/session.

Code health

Strong test culture: nine test projects on the API side (unit, integration, Testcontainers-based) plus five on the UI side, with a coverage-report script. Actively developed (last commit 2026-07-24). README is mostly boilerplate with some Rider setup notes.

Modernisation risks

Medium: the API half is exemplary (.NET 10, tested, containerised), but the revenue-generating UI is still a .NET Framework 4.8.1 MVC app coupled to ~20 estate services and the Phenix IIS shell, so cruise cannot leave the legacy platform until that UI is rebuilt. The repo's split personality also means two build toolchains and dependency graphs to maintain.